Ammonia → HCID 13273295, compound

Participants

Reaction Steps

To a solution of 0.258 g. of 1-[2-(2-pyridinecarbonyl)phenyl]-5-chloromethyl-1H-1,2,4-triazole-3-carboxylic acid in 7.5 ml. of chloroform are added 0.14 ml. of triethylamine and then 0.1 ml. of ethyl chlorocarbonate with ice-cooling. After stirring for 10 minutes, to the resulting mixture is added 0.5 ml. of concentrated aqueous ammonia, and the whole mixture is further stirred for 30 minutes. The precipitated crystals are collected by filtration, washed successively with water, ethanol and ether, and then dried to give 1-[2-(2-pyridinecarbonyl)phenyl]-5-chloromethyl-1H-1,2,4-triazole-3-carboxamide as crystals. The filtrate is extracted with chloroform and the chloroform layer is washed with water, dried over sodium sulfate, followed by evaporation of the solvent to give additional crystals identical with the abovementioned crystals. Recrystallization of the combined crystals from chloroform-ethanol gives colorless needles, melting at 228° to 229° C. (decomposition).

Provenance & Evidence